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An Auxiliary Resonant Commutated Pole Inverter with Phase Correlation Zener Tube Clamp

A technology of converter transformers and voltage regulator tubes, which is applied in the direction of output power conversion devices, conversion of DC power input to DC power output, and conversion of AC power input to DC power output, etc., which can solve the problem of increasing transformer volume, cost and leakage inductance Loss and other issues to achieve the effect of improving efficiency and power density, reducing EMI, and reducing costs

Active Publication Date: 2022-03-18
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above two methods, one coupled inductor can only realize the zero-voltage turn-on of one main switch tube, so two coupled inductors need to be used in an auxiliary circuit, thus increasing the volume, cost and leakage inductance loss of the transformer

Method used

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  • An Auxiliary Resonant Commutated Pole Inverter with Phase Correlation Zener Tube Clamp
  • An Auxiliary Resonant Commutated Pole Inverter with Phase Correlation Zener Tube Clamp
  • An Auxiliary Resonant Commutated Pole Inverter with Phase Correlation Zener Tube Clamp

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Embodiment Construction

[0265] Such as Figure 1 to Figure 13 As shown, the present invention provides an auxiliary resonant commutation pole inverter clamped by a phase-correlated Zener tube, which includes a first main switching tube S 1 , the second main switch S 2 , the first commutation diode D c1 , the second commutation diode D c2 , DC power supply V DC , Auxiliary power supply V AUX , load Load, the first voltage divider capacitor C d1 and the second divider capacitor C d2 , the first resonant inductance L r1 , the second resonant inductance L r2 , Auxiliary converter transformer primary winding T 1 , Auxiliary converter transformer secondary winding T 2 , Auxiliary converter transformer secondary winding T 3 , the first freewheeling diode D x1 , the second freewheeling diode D x2 , the first Zener diode D z1 , the second Zener diode D z2 , the first auxiliary switch tube S a1 , the second auxiliary switch tube S a2 , the third auxiliary switch tube S a3 , the fourth auxiliar...

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Abstract

The invention discloses an auxiliary resonant commutation pole inverter clamped by a phase-correlated voltage regulator tube, which includes a main circuit and an auxiliary circuit; the phase-shifting full-bridge network charges the auxiliary resonant pole inductance through an isolation transformer to realize the main switch. ZVS; the energy storage in the magnetizing inductance realizes the ZVS of the auxiliary switch. The commutation charging phase is anti-correlated with the reset phase locking, which realizes the bidirectional reset of the magnetizing current and reduces the volume of the magnetic core. Zener tube clamp effectively protects the auxiliary commutation diode. The circuit of the present invention maintains the prior art by using the phase correlation method, realizes the zero-voltage turn-on of the main switch and the auxiliary switch, reduces the switching loss of the main switch, effectively improves efficiency and power density, and reduces cost and EMI. In addition, in the auxiliary circuit The auxiliary switch of the auxiliary switch also realizes zero-voltage turn-on through the energy storage in the exciting inductance, and its withstand voltage value is much lower than that of the main switch; the coupling of the secondary winding of the transformer solves the problem of the auxiliary commutation diode D c1 and D c2 overvoltage problem.

Description

technical field [0001] The invention relates to the technical field of power electronic conversion, in particular to an auxiliary resonant commutation pole inverter clamped by a phase-correlated voltage regulator tube. Background technique [0002] The voltage source inverter VSI is essentially a synchronous rectification buck-boost converter composed of a fully-controlled switching half-bridge, which is widely used in applications of various power levels, such as: motor drives, active power filters , uninterruptible power supply UPS, photovoltaic power system, fuel cell power system and distributed power grid, etc. The core of its research is to improve efficiency and power density. [0003] Under hard switching conditions, the power density is usually increased by reducing the size and weight of passive components by increasing the switching frequency, but increasing the switching frequency will lead to an increase in switching loss and high-frequency electromagnetic inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/5387H02M3/335
CPCH02M7/5387H02M3/33576H02M1/0058Y02B70/10
Inventor 禹健安永泉
Owner SHANXI UNIV
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